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Other literature type . 2015
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Other literature type . 2015
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Descrição matemática do Método Flash para determinação da difusividade térmica

الوصف الرياضي لطريقة الوميض لتحديد الانتشار الحراري
Authors: J. N. O. Pinto; A. N. Rouver; E. G. Betini; Luis Alfonso Correa; M. T. D. Orlando; C. A. C. Passos;

Descrição matemática do Método Flash para determinação da difusividade térmica

Abstract

Introduite par Parker en 1961, la méthode des impulsions d'énergie (méthode Flash) est la technique la plus utilisée et la plus connue pour déterminer la diffusivité thermique des matériaux céramiques. Elle consiste en une méthode directe de détermination de la diffusivité thermique, dans laquelle une impulsion de courte durée d'énergie rayonnante est focalisée sur l'une des faces de l'échantillon, et la variation de température sur la face opposée est mesurée. Cette étude vise à décrire explicitement le chemin adopté par Parker pour l'élaboration de cette méthode. En partant de l'équation de diffusion thermique, on obtient la solution de l'équation différentielle partielle avec des conditions aux limites non homogènes, ce qui fournit la

Introducido por Parker en 1961, el método de pulso de energía (Método Flash) es la técnica más utilizada y mejor conocida para determinar la difusividad térmica de los materiales cerámicos. Consiste en un método directo para determinar la difusividad térmica, en el que se enfoca un pulso de corta duración de energía radiante en una de las caras de la muestra, y se mide la variación de temperatura en la cara opuesta. Este estudio tiene como objetivo describir explícitamente el camino adoptado por Parker para la elaboración de este método. A partir de la ecuación de difusión de calor, se obtiene la solución de la ecuación diferencial parcial con condiciones de límite no homogéneas, que proporciona la

Introduzido por Parker em 1961, o método do pulso de energia (Método Flash) é a mais usada e mais conhecida técnica para a determinação da difusividade térmica de materiais cerâmicos.Consiste de um método direto na determinação da difusividade térmica, no qual um pulso de energia radiante e de curta duração é incidido sobre uma das faces da amostra, sendo medida a variação de temperatura na face oposta.Este estudo tem o objetivo de descrever de forma explícita o caminho adotado por Parker para elaboração deste método.Partindo da equação de Difusão de calor, obtém-se a solução da equação diferencial parcial com condições de contorno não homogêneas, que fornece a

Introduced by Parker in 1961, the energy pulse method (Flash Method) is the most used and best known technique for determining the thermal diffusivity of ceramic materials. It consists of a direct method in determining the thermal diffusivity, in which a short-lived pulse of radiant energy is focused on one of the faces of the sample, and the temperature variation on the opposite face is measured. This study aims to explicitly describe the path adopted by Parker for the elaboration of this method. Starting from the heat diffusion equation, the solution of the partial differential equation with non-homogeneous boundary conditions is obtained, which provides the

طريقة نبض الطاقة (طريقة الوميض) التي قدمها باركر في عام 1961 هي التقنية الأكثر استخدامًا والأكثر شهرة لتحديد الانتشار الحراري للمواد الخزفية. وهي تتكون من طريقة مباشرة في تحديد الانتشار الحراري، حيث يتم تركيز نبضة قصيرة العمر من الطاقة الإشعاعية على أحد وجوه العينة، ويتم قياس تباين درجة الحرارة على الوجه الآخر. تهدف هذه الدراسة إلى وصف المسار الذي اعتمده باركر صراحةً لوضع هذه الطريقة. بدءًا من معادلة الانتشار الحراري، يتم الحصول على حل المعادلة التفاضلية الجزئية بشروط حدودية غير متجانسة، والتي توفر

Keywords

Transient Temperature Measurement, Physics, Biomedical Engineering, Aerospace Engineering, FOS: Mechanical engineering, FOS: Humanities, Thermal Diffusivity, Thermometry, FOS: Medical engineering, Humanities, Engineering, Development and Application of Thin Film Thermocouples, Mechanics of Materials, Physical Sciences, Pulsed Thermography, Applications of Infrared Thermography in Non-Destructive Testing, Radiometric Calibration and Performance Monitoring, Art

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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Average
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